Zinc is a natural, healthy, and abundant element that has been used in construction since 79 AD. The characteristics of the metal, like its excellent corrosion resistance in most environments accounts for it being a well-suited corrosion protective coating for steel and iron products.
Zinc has the ability to form dense, adherent corrosion by products. This results in a rate of corrosion that is considerably lower than ferrous materials. It ranges from 10 to 100 times, depending on the surrounding environment. A fresh zinc surface exposed is rather reactive to the atmosphere, but the corrosion products of zinc develop rapidly on the surface and these corrosion products, collectively known as the zinc patina, add another barrier between the environment and the steel.
Surface treatment units in India have available a number of different methods of applying zinc coatings to steel, each method having its own unique characteristics. Each product that is produced by these processes has its different use, depending on the applicability, relative economics and expected service life, therefore, not all the process (unlike popular opinion) can be labelled as â€˜galvanizingâ€™.